The Body Assembly,relief Valve, cataloged under National Stock Number 4820-01-018-1818, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Eaton Aerospace, Llc Dba Jackson South. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-018-1818 |
| Primary Part Number | 841178 |
| Item Name | Body Assembly,relief Valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Eaton Aerospace, Llc Dba Jackson South |
| Status | ACTIVE |
| General Characteristics Item Description | 4.125 IN OD.,3.125 IN HIGH,HAS 5 EVENLY SPACED .250 IN BOLT HOLES ON 3.500 IN. BOLT CIRCLE IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 841178 PRIMARY | Eaton Aerospace, Llc Dba Jackson South (USA) |
| 830228 | Eaton Aerospace, Llc Dba Jackson South (USA) |
| Reference | Meaning |
|---|---|
| 841178 | 3/9 Design control — primary reference U.S. Government activity |
| 830228 | 5/9 Secondary reference U.S. Government activity |
NSN 4820-01-018-1818 is a Body Assembly,relief Valve, manufactured by Eaton Aerospace, Llc Dba Jackson South, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-018-1818 has 2 manufacturer part numbers on file: 841178 (Eaton Aerospace, Llc Dba Jackson South), 830228 (Eaton Aerospace, Llc Dba Jackson South).
Key specifications for 841178: General Characteristics Item Description: 4.125 IN OD.,3.125 IN HIGH,HAS 5 EVENLY SPACED .250 IN BOLT HOLES ON 3.500 IN. BOLT CIRCLE IN. 1 specification is documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.